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Methods of manufacturing wind turbine blades

A technology of wind turbine blades and recesses, which is applied to the support elements of blades, wind power engines, engine manufacturing, etc., and can solve time-consuming and other problems

Inactive Publication Date: 2012-10-17
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, this process is time consuming as the winding operation must be interrupted to allow the former to be inserted

Method used

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  • Methods of manufacturing wind turbine blades
  • Methods of manufacturing wind turbine blades
  • Methods of manufacturing wind turbine blades

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] refer to figure 2 An elongated spar 8 of a wind turbine rotor blade is formed by winding a length of fiber of a suitable material, eg glass, around a mandrel, such elongated spar being formed with a recess 9 after completion of the winding process. An elongated web 10 is attached within the recess 9 of the spar 8 by using a combination of adhesive and an array of pins 11 . A plurality of spacer elements 12 may be connected between the spar 8 and the additional web 10 to provide support for the additional web 10 . The root end 13 of the spar 8 (on the left hand side of the figure) is attached to the central hub of the wind turbine. The part of the spar from the root end up to a distance therefrom is referred to herein as the root end, in which, as described above, the spar has a circular cross-section with a transition from circular to rectangular the section area of ​​.

[0034] image 3 A quarter-part elongated spar 8' is shown, which is similar to figure 2 The ...

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Abstract

An elongate web 10 is attached to the root end of a spar 8 of a wind turbine rotor blade to provide additional support along the width of the blade. The root end of the spar 8 is formed by a winding operation, and a recess is then cut into the surface of the spar 8. The recess is defined by a relatively large first, cylindrical surface 20, which is coaxial with the longitudinal axis of the root end, and a relatively small second, conical surface 21. A tapered end of the elongate web 10 is attached within the recess of the root end of the spar 8 using a layer of suitable adhesive 24 and an array of pins 11. Resilient spacer elements 23 are arranged within the recess so as to surround the pins 11. The large area of the cylindrical surface 20 causes the tensile and compressive stresses which arise along the elongate web 10 in use to be transmitted to the spar 8 as shear stresses.

Description

technical field [0001] The present invention relates to a method of manufacturing a wind turbine rotor blade and, in particular, to a method in which the rotor blade incorporates an additional web. Background technique [0002] figure 1 A typical horizontal axis wind turbine is shown in . A wind turbine 1 comprises a tower 2 , a nacelle 3 mounted on top of the tower 2 , and a rotor 4 operatively coupled to a generator 5 within the nacelle 3 . The wind turbine 1 converts the kinetic energy of the wind into electrical energy. In addition to the generator 5 , the nacelle 3 also houses the various components required to convert wind energy into electrical energy and to operate and optimize the performance of the wind turbine 1 . The tower 2 supports the load of the nacelle 3 , the rotor 4 and other wind turbine components inside the nacelle 3 . [0003] The rotor 4 comprises a central hub 6 and extending radially outwards from the central hub 6 are three elongate rotor blade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F16B11/00
CPCF05B2230/00Y02E10/721F03D1/0675Y10T29/49337Y10T29/49336Y10T29/49947Y02E10/72Y02P70/50B21D53/78F01D5/282B23P15/04
Inventor 马克·汉考克安东·贝什R·C·维尔霍夫A·吉尔K·格雷戈里
Owner VESTAS WIND SYST AS
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